Method of sealing metal cans.



C. E. ROGERS.

METHOD 0F SBALING METAL cANs.

APPLICATION FILED DBO. 14, 1912.

1,070,736. A Patented A`ug.19,1913.

spring l0 connecting the two levers above the pivot points and the jaws are of a form adapted to engage the projecting displaced material. Sphned to the shaft 4 and revolnble therewith is a cone 11 engaged by the rollers 12, 12 secured to the ends of the levers 7 and 8. The cone 11 may be reciprocatcd on the shaft by means of a pivotcd lever 13 supported in any convenient manncr.

With the parts in the position shown in Fig. 4, if the shaft 4 be made to rapidly revolve in any convenient manner, theprong engaging jaws 9 rotate about the projecting material during which rotation the cone 11 is forced downwardly on the shaft as is indicated by dotted lines, and the jaws 9 are gradually forced together which rolls t-he displaced material into the opening. If during such rotation and gradual forclng to gether of the jaws 9, the shaft 4 and attached parts be forced downwardly, the jaws at the time they are completely closed, will occupy a position as indicated by dotted lines at a in Fig. 4 and the displaced material will thereby be depressed or forced below the original position occupied prior to the forming of the aperture and a shallow pocket will thus result and the can end will have substantially the appearance of that indicated in Fig. 3, in which the can is shown as being in condition to receive the sealing medium. The material may also be forced back into substantially its original position by the means shown diagrammatically in the heretofore mentioned pending application and if the material be replaced in such manner it may be passed directly to an automatic soldering iron which is so positioned relative to the can top that in descending thereupon to deposit the solder it will slightly depress the cut portions of the top to form a shallow pocket at that oint simultaneously with the depositing o the solder.

While the preferable method of forcing the material into the aperture is by use of mechanical means by reason of the rapidity with which the act may be performed, it is to be understood that the material may be replaced or forced into the aperture and soldered in position by hand without departing from the spirit of this invention.

A can of the form shown involves no greater manufacturing cost than a can of the ordinary form and the cost of sealing the can by the method herein disclosed is considerably less as it is evident that not only is the labor cost materially lessened but ractically all cans may be properly sealed 1n the soldering operation and the labor of inspection and of resoldering imperfectly sealed cans is reduced to a minimum. saving of material is also e'ected by reason of no separate cap being required for the Lomme larger' openings and only a small amount of solder is necessary to properly seal the openmg.

Having thus briefly described my improved method of sealing metal cans and the preferable means by which it may be" performed, what l: claim and desire to secure by' the material to project exteriorly of the can f consisting in forcing the displaced material into the opening to form a shallow pocket and depositing solder therein.

3. A method of sealing metal cans pro- Lvided with a filling aperture formed by displacing the material to project eXteriorly of the can in the shape of prongs, consisting in forcing the prongs into the opening slightly below their original position and depositing solder thereon.

4. The method of sealing metal cans provided with a filling aperture formed by displacing the material to project exteriorly of the can in the shape of prongs, consisting in forcing the prongs into ythe opening to form a shallow pocket and filling the pocket with solder.

5. The method of sealing metal cans provided with a filling aperture formed by a displacement of the material consisting in replacing the displaced material, forcin the replaced material below the surface o the surrounding material to form a shallow pocket and depositing solder therein.

6. The method of sealing met-al cans provided with a filling aperture formed by a displacement of the material to project eX- teriorly of the can, consisting in replacing said material in the aperture, de ressing the material to form a shallow poc et and soldering the material in its depressed position.

7. The method of sealing metal cans provided with a filling aperture formed by displacement of the material to project exteriorly of the can consisting in forcing the displaced material into the opening to form a shallow pocket and simultaneously depositing solder therein.

8. The method of sealing metal cans provided with a filling aperture formed by displacing the material to project exteriorly of the can in the shape of prongs consisting in forcing the prongs into the opening slightly below their original position and closing the A linterstices therebetween by means of a solder.

9. The method of sealing metal cans provided with a filling aperture formed by dismaterial in a manner to form a shallow 10 placement of the material consisting in forcpocket, and completing the closing of the lng the displaced material into the opening aperture by the use of a sealing medium.

to form a shallow pocket and depositing a In testimony whereof,I sign'this speci- 5 sealing medium therein. ication in the presence of two wltnesses.

l0. The method of sealing metal cans pro- CHARLES E. ROGERS. vided with a, lling aperture formed by dis- Witnesses: placement of the material consisting in par- CHARLES E. WISNER,

tially closing the aperture with the displaced SELENE MCDONALD. 

